Total extermination/genocide of an entire race/culture.
I'd say the first one. The ability to wage a defensive war.
<span>Orgo wanted to buy this because it was a very attractive offer and a novel and easy acquisition. It seemed simple enough to do it and he chose to buy it, for the supply and maintenance of the garden he obtained at a just an opportune moment in which I do not hesitate to do so.</span>
In powerful countries, nationalism can lead to imperialism. Nationalism can be defined as the idea that your country is superior to all others. If people feel nationalistic, they might start to want to prove that their country is better than the others. One way to prove this is by taking an empire.